Strings library

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++0x feature) Atomic operations library (C++0x feature) Thread support library (C++0x feature)
Strings library
Narrow character strings Wide character strings Classes basic_string char_traits Functions getline stoi stol stoll stoul stoull (C++0x) (C++0x) (C++0x) (C++0x) (C++0x) stof stod stold (C++0x) (C++0x) (C++0x) to_string (C++0x) to_wstring (C++0x)

Contents 1 Null terminated narrow string management 2 Null-terminated wide string management 3 basic_string 4 Functions 4.1 Numeric conversions 5 Hash support 6 Char traits

[edit] Null terminated narrow string management

[edit] Null-terminated wide string management

[edit] basic_string

Header <string> defines class template basic_string that generalizes the way how sequences of characters are manipulated and stored. It is defined as follows:

​template<     typename CharT,     typename Traits = std::char_traits<CharT>,     typename Allocator = std::allocator<CharT> > > class basic_string;​

Also, several specializations of the class basic_string are provided:

Defined in header <ostream>
Type	Definition
string	​basic_string<char>​
wstring	​basic_string<wchar_t>​
u16string	​basic_string<char16_t>​
u32string	​basic_string<char32_t>​

Functions
getline	read data from an I/O stream into a string (function)
Numeric conversions
stoi stol stoll stoul stoull (C++0x) (C++0x) (C++0x) (C++0x) (C++0x)	converts the given string to an integer (function)
stof stod stold (C++0x) (C++0x) (C++0x)	converts the given string to an floating point value (function)
to_string (C++0x)	converts the given integral or floating point value to string (function)
to_wstring (C++0x)	converts the given integral or floating point value to wstring (function)

[edit] Hash support

The following specializations of class template hash are defined. These specializations provide hash support for default string types.

Defined in header <string>
​template<> class hash<string>;​		(C++0x feature)
​template<> class hash<wstring>;​		(C++0x feature)
​template<> class hash<u16string>;​		(C++0x feature)
​template<> class hash<u32string>;​		(C++0x feature)

[edit] Char traits

Strings library provides class template char_traits, defining types and functions for a character container. The following specializations are defined:

Defined in header <string>
​template<> class char_traits<string>;​
​template<> class char_traits<wstring>;​
​template<> class char_traits<u16string>;​		(C++0x feature)
​template<> class char_traits<u32string>;​		(C++0x feature)